Aqueous-synthesis of CuInS2 core and CuInS2/ZnS core/shell quantum dots and their optical properties

被引：28
|
作者：
Jia, Licong [1 ]
Wang, Yongbo [1 ]
Nie, Qiqi [1 ]
Liu, Bei [1 ]
Liu, Enzhou [1 ,2 ,3 ]
Hu, Xiaoyun [2 ]
Fan, Jun [1 ]
机构：
[1] Northwest Univ, Sch Chem Engn, Xian 710069, Peoples R China
[2] Northwest Univ, Sch Phys, Xian 710069, Peoples R China
[3] Northwest Univ, Inst Modern Phys, Xian 710069, Peoples R China
来源：
MATERIALS LETTERS | 2017年 / 200卷
基金：
中国博士后科学基金; 高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
CuInS2 quantum dots; Optical materials and properties; Aqueous-phase synthesis; Tunable emission; Spectroscopy; GRAM-SCALE SYNTHESIS; NANOCRYSTALS; CDTE; GAP;
D O I：
10.1016/j.matlet.2017.04.082
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The water-soluble CuInS2 quantum dots (CIS QDs) have been successfully synthesized by a one-pot aqueous-phase synthesis method using indium chloride and copper chloride as reactants. The type-I structure CIS/ZnS core/shell QDs were synthesized in situ for surface passivation, which led to a dramatic enhancement of fluorescence intensity. The CIS/ZnS QDs exhibited a tunable emission in the range of 500-680 nm by changing the ratio of Cu:In without the variation of size. And the corresponding fluorescent color changed from green to red. The QDs with uniform diameter could be assigned to a typical chalcopyrite structure according to XRD analysis. The as-prepared CIS/ZnS QDs have a good potential to be applied in biomedical fluorescence label and probes due to their low toxicity and excellent optical features. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：27 / 30
页数：4
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